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Sending data over time

The principles of the transistor

Types of deformation

Osmotic pressure

Properties and gas pressure

Prokaryotes and eukaryotes, differences and similarities

Chromosome.

The pituitary gland and pituitary hormones.

Circulation of matter in the Universe

The dissociation of salts, acids and alkalis.

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How to calculate current income tax
Customs duties on imports of: economic sense and species.
Distribution and fiscal function of taxes